Passing data from Capacitor plugin to AppDelegate.swift

Question

I have an Ionic Capacitor app, and I have some data within custom capacitor plugin that I need to get into AppDelegate.swift (./ios/App/AppDelegate.swift). How can I call a method in AppDelegate.swift from within the plugin swift code?

Answer 1

You can save data in Userdefaults from your custom capacitor plugin and after that you can fetch this data from AppDelegate.swift as-

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        if let myData = UserDefaults.standard.object(forKey: "YourKey") {
            // decode myData and use as your need
        }
        return true
 }

Answer 2

You can call a function of the app delegate instance using the following pattern:

        if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
            appDelegate.test()
        }

AppDelegate must be the name of the delegate class.